The Elements of Non-Euclidean Geometry
Coolidge, Julian Lowell CHAPTER I FOUNDATION FOR METRICAL GEOMETRY IN A LIMITED REGION
CHAPTER II CONGRUENT TRANSFORMATIONS
CHAPTER III THE THREE HYPOTHESES
CHAPTER IV THE INTRODUCTION OF TRIGONOMETRIC FORMULAE
CHAPTER V ANALYTIC FORMULAE
CHAPTER VI CONSISTENCY AND SIGNIFICANCE OF THE AXIOMS
CHAPTER VII THE GEOMETRIC AND ANALYTIC EXTENSION OF SPACE
CHAPTER VIII THE GROUPS OF CONGRUENT TRANSFORMATIONS
CHAPTER IX POINT, LINE, AND PLANE TREATED ANALYTICALLY
CHAPTER X TH...